﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Bai26_C_Sharp
{
    class Program
    {
        static void Main()
        {
            absClass b = new absDerived();
            b.numbers = 10;
            Console.Write(b.numbers);
        }
    }
}
